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Finding the Fourth Proportional to 1,527.87, 2,289.91 and 552.90

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Solution

The fourth proportional to 1,527.87, 2,289.91 and 552.90 is: 828.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.87 : 2,289.91 = 552.90 : x
  2. Step 2: Convert to fraction form
    1,527.87/2,289.91 = 552.90/x
  3. Step 3: Cross multiply
    1,527.87x = 2,289.91 × 552.90
  4. Step 4: Simplify right side
    1,527.87x = 1,266,089.86
  5. Step 5: Solve for x
    x = 1,266,089.86/1,527.87
  6. Step 6: Final answer
    x = 828.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.